CN1795054A - Rocess for producing coated sheet, optically functional layer, optically compensating plate, optical device and image display - Google Patents
Rocess for producing coated sheet, optically functional layer, optically compensating plate, optical device and image display Download PDFInfo
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- CN1795054A CN1795054A CNA2004800143989A CN200480014398A CN1795054A CN 1795054 A CN1795054 A CN 1795054A CN A2004800143989 A CNA2004800143989 A CN A2004800143989A CN 200480014398 A CN200480014398 A CN 200480014398A CN 1795054 A CN1795054 A CN 1795054A
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- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 1
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- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
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- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
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- 239000000057 synthetic resin Substances 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 description 1
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- ZLGWXNBXAXOQBG-UHFFFAOYSA-N triethoxy(3,3,3-trifluoropropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC(F)(F)F ZLGWXNBXAXOQBG-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
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- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a method of cleaning a coated sheet, characterized in that dry air is blown along the direction of the movement of a film to the surface of a coating layer where the solid content concentration and viscosity of the coating liquid are in specified ranges. According to this method, the accuracy in the thickness of the coating film in a large area is enhanced and the optical function characteristics can be made uniform in the plane. The velocity and temperature of the dry air and the thickness of the dried coating film are preferably in specified ranges. Such a coated sheet is very useful, as an optical material exhibiting excellent characteristics, especially for an optically functional layer to which the coated sheet is applied widely as a large area coated sheet, an optical device having such an optically functional layer, an optically compensating layer, and an optically compensating plate, and especially effective in an optical display where they are mounted.
Description
Technical field
The present invention relates to a kind of manufacture method of tunicle thin slice, particularly useful in the formation of optical functional layer.And then, having used the optical element of this optical functional layer etc., can in LCD (LCD), organic EL display, various image display devices such as PDP, CRT, utilize suitably.
Background technology
Usually, as the tunicle thin slice, for example can enumerate various optical functional films with optical functional layer.In the display unit of the OA machine that is called TV or desktop computer, be main flow at CRT in the past, but be for conversion into have so-called slim light weight, the liquid crystal indicator of big advantage that power consumption is low.The liquid crystal indicator of popularizing has optical functional layers such as surface treatment capsule such as the liquid crystal layer that is used to make phase-contrast film, the hard conating that is used to protect the surface, antireflection film now.
In order to obtain such optical functional film, use the method for coated optics functional layer on base film mostly all the time, operation manufacturings such as the coating by implementing coating liquid on base film, drying have formed the various tunicle thin slices (for example, opening clear 62-1406722 communique with reference to the spy) that are coated with rete.As the thin layer coating process, can enumerate seam die head coating machine, heliogravure coating machine etc. usually.
In addition, in recent years,, must improve the homogeneity of filming of giving function, be not only the selection of application pattern along with the high performance of optical function, and the control of drying process after the coating also become important (for example, opening flat 8-94836 communique with reference to the spy).
But, even use any application pattern, all resin flows can take place, thereby be difficult to be coated with rete with the thickness formation of homogeneous till working procedure of coating moves to drying process.Particularly being difficult on large-area base film thickness with homogeneous forms and is coated with rete.
For example, when on macromolecule membrane, forming hard conating, anti-reflection layer etc., refractive index difference is arranged on stacked resin bed, so particularly the interference inequality that causes of the uneven thickness that produces by the resin flows after the coating is very serious.In this case, owing to produce skew in the optical thickness in face, so reflectivity Characteristics is also low than theoretical value.
In addition, the liquid crystal molecule of known formation liquid crystal layer is very easy to be subjected to the influence at interface usually, the arrangement (orientation) that liquid crystal molecule is become have armaticity by interface limitations power such as frictions.Under the situation that is above-mentioned application pattern, become open system owing to contain the one side of the coated liquid of liquid crystal molecule, so in known usually coating, drying mode, the air flow results of open system side can cause the generation of the orientation inequality of liquid crystal layer.In the liquid crystal layer that obtains like this, the problem points that positive contrast changes on the part of LCD is arranged.
Summary of the invention
The objective of the invention is to, be provided at the thickness and precision of filming is improved and realize in the face of optical function characteristic homogenization, utilized outstanding optical functional layer, optical compensation plate, optical element or the image display device of these advantages simultaneously.
The inventor etc. concentrate on studies in order to finish above-mentioned problem, found that the manufacture method by following tunicle thin slice can achieve the above object, so that finish the present invention.
The present invention is the manufacture method of tunicle thin slice, comprise: the coating liquid that will contain resin material and solvent is coated in and forms the operation that is coated with rete on the base film and operation that drying coated applies liquid, wherein, to spray to the solid component concentration with above-mentioned coating liquid be below the 55 weight % and viscosity is the film coated surface of the state below the 20mPas with dry wind along the direction of travel of base film.In addition, the present invention includes following operation: the coating liquid that will contain resin material and solvent is coated on the base film and forms that to have solid component concentration be that the following and viscosity of 55 weight % is the operation that is coated with rete of the following state of 20mPas, direction of travel along above-mentioned base film, operation to the above-mentioned layer ejection dry wind of filming makes the above-mentioned operation that is coated with the rete drying.Discovery demonstrates following effect: by the injection of dry wind form on the film coated surface fine uneven and fine concavo-convex effect of carrying out levelling like that arranged in solvent evaporation process subsequently, and when jet drying wind the solvent flash evaporation and before the convection current of the coating liquid that the evaporation inequality that produces by solvent causes, viscosity rises and the effect of liquid flow can not take place, obtain inventor's viewpoint thus, even so in large-area zone, the thickness and precision that is coated with rete is improved, make the homogenization in face of optical function characteristic.
In addition, the wind speed of the dry wind of above-mentioned injection is preferably 4～20m/sec, be preferably in the wind speed deviation of film wide cut direction ± below 30%.By such condition, can more effectively improve the thickness and precision that is coated with rete, make the homogenization of optical function characteristic.
And then the temperature of the dry wind of above-mentioned injection is preferably 20～45 ℃, the temperature deviation in film wide cut direction is preferably ± and below 15%.By such condition, can guarantee more appropriate solvent evaporation rate, improve the thickness and precision that is coated with rete more effectively, make the homogenization of optical function characteristic.
The preferred above-mentioned dried thickness that is coated with rete of the present invention is below the 30 μ m.Except by the injection conditions of aforesaid dry wind, also be coated with the thickness of rete by restriction, can further improve the thickness and precision that is coated with rete effectively, make the homogenization of optical function characteristic.
The present invention preferably forms the above-mentioned rete that is coated with as optical functional layer by the material that uses the performance optical function in above-mentioned coating liquid.The manufacture method of aforesaid tunicle thin slice is in large-area zone, to the precision that requires coating thickness (being coated with the thickness of rete), require the optical functional layer of the homogeneity of optical function characteristic in face effective especially.
The manufacture method of tunicle thin slice of the present invention, the preferred material that uses the above-mentioned optical function of material do performance of performance optical compensation function forms the above-mentioned rete that is coated with as optical functional layer thus.For the precision of the thickness that requires to be coated with rete, require the optical function characteristic for the optical compensating layer of the homogeneity in the face, aforesaid manufacture method is especially effective creating method.
In addition, the manufacture method of tunicle thin slice of the present invention, be preferably formed constitute that molecule is taked cholesteric structure and the cholesteric layer that is orientated as above-mentioned optical compensating layer.For the precision of the thickness that requires to be coated with rete, require the optical function characteristic for the optical compensating layer of the cholesteric structure of the homogeneity in the face, above-mentioned manufacture method is effective especially.
In addition, material as the above-mentioned optical compensation function of performance, use liquid crystal monomer, after above-mentioned drying process, preferably by the above-mentioned rete that is coated with is carried out polymerization processing or crosslinking Treatment and forms non-liquid crystal polymer that polymerization or crosslinked above-mentioned liquid crystal monomer are formed as the cholesteric layer that constitutes molecule.In such optical compensation plate, because polymerization or the crosslinked polymer that forms become non-liquid crystal liquid crystal property, so established cholesteric layer can not occur in yet in the liquid crystal molecule distinctive by variations in temperature cause to the variation of liquid crystalline phase, glassy phase, crystalline phase etc., can be described as its cholesteric structure and can not be subjected to the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of influence of temperature variation, stability.
Perhaps, preferably by using liquid crystal monomer or liquid crystal polymer material as the above-mentioned optical compensation function of performance, formation will take cholesteric structure and the liquid crystal polymer that is orientated as the cholesteric layer that constitutes molecule.Even the formation molecule is a liquid crystal polymer, also can be and the above-mentioned little cholesteric layer of variations in temperature that is made like by cooperating cholesteric crystal monomer or chirality agent, can become the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of stability.
Here, the thickness of above-mentioned cholesteric layer is preferably the scope of 0.5～10 μ m.By the thickness of this scope, can prevent that as optical compensating layer the disorder or the transmissivity that are orientated from reducing, and can improve and select reflectivity, anti-coloring, productivity ratio etc.
The present invention is the optical compensation plate that obtains when taking cholesteric layer that cholesteric structure is orientated when above-mentioned optical functional layer is optical compensating layer or at the formation molecule of this optical compensating layer preferably.The optical functional layer that manufacture method by above-mentioned tunicle thin slice obtains, the precision height and the homogeneity of optical function characteristic in face of its coating thickness are outstanding, for with it as for the optical compensation plate of the optical compensating layer of optical compensating layer or cholesteric structure, effective especially.
In addition, the present invention is preferred in the optical element that possesses such optical functional layer.For optical element, require to have the diversified characteristic consistent, and above-mentioned optical element has very high importance therein with each purposes, it very well guarantees the precision or the internal homogeneity of coating thickness.
Optical element of the present invention is characterised in that, stacked at least one deck polarizer on above-mentioned optical compensation plate.By on the supereminent optical compensation plate of aforesaid stability, having formed the optical element of one deck polarizer stacked at least, can become optical element with outstanding optical function characteristic.
And then, in having carried above-mentioned optical functional layer, optical compensation plate or optical element, be suitable in any one the image display device.By such optical functional layer or optical compensation plate, optical element, there is not the image display device uneven or distortion of image to become possibility.
Description of drawings
Fig. 1 is the schematic diagram of an example of expression embodiments of the present invention.
Fig. 2 shows the schematic diagram of the state of tunicle thin slice as an example of embodiments of the present invention.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.Fig. 1 is the concise and to the point figure of the manufacturing installation of an expression example of the present invention.Fig. 2 is the schematic diagram that is illustrated in the state of tunicle thin slice in each operation of device.
In Fig. 1, illustration make an example of the manufacture method of tunicle thin slice, promptly utilize roller 4 to transport base film (following also be called simply " film ") 1, process applies the operation (1) of the coating liquid 2 that contains resin material and solvent and the operation (2) that drying coated applies liquid on film 1 in order, thereby makes the tunicle thin slice.The film 1 that roller 4 is sent is transported in utilization, is to use heliogravure coating machine 3 coating liquid coating 2 thereon in operation (1), the operation of then dividing a word with a hyphen at the end of a line (2).In operation (2), between the air inlet zone between 7 and with the regulation spray angle 6, from the jet surface dry wind that be coated with rete of nozzle 5 to film 1.In this operation (2), can make the layer of filming dry.In addition, in operation (2) afterwards, can make the operation that is coated with the rete drying.That is, the present invention is the suitableeest method that is coated with rete of formation by the various condition researchs in the drying process are proposed.
Coating method to the coating liquid 2 in the operation (1) is not particularly limited, and can adopt usual way.For example can enumerate seam die head method, reverse heliogravure coating process, little heliogravure, method of impregnation, spin-coating method, spread coating, rolling method, aniline printing method etc.The illustrative method that is to use gravure roll coating machine 3 in Fig. 1.
Formation method to the dry wind in the operation (2) is not particularly limited, and can use common heating arrangements.For example can enumerate fan heater, warm-up mill, far infra-red heater etc.
In operation (2) afterwards, according to the kind of coating liquid, can further implement heat cure, UV curing etc. and solidify processing.Then, at situation of being batched or further covering protection thin slice and under the situations such as situation of batching, implement the processing of back operation by the specification of tunicle thin slice by takers-in (not shown).What obtain like this is coated with rete (following be also referred to as by rete sometimes), except can not peeling off and using from film 1, can also peel off and uses from film 1.
Fig. 2 is the figure that is illustrated in each operation the cross section of the film 1 that forms in order, and the state (A) before the expression coating, just coating liquid coating 2 forms the state (B) that is coated with after the rete 8 and then the state that is coated with rete 8 ' (C) after the dry processing on film 1.
The invention is characterized in, in above-mentioned manufacture method, to have the coating liquid solid component concentration below the 55 weight % and viscosity be on the surface that is coated with rete 8 of the state below the 20mPas, along the direction of travel jet drying wind of film 1.As inventor's viewpoint, think owing to following reason makes the optical function characteristic homogenization that is coated with in rete 8 and the face.That is, when spraying wind, form the visual micro concavo-convex injustice that is difficult to perception on film coated surface, be difficult to see visual big uneven, the levelling effect that produces in solvent evaporation process subsequently demonstrates uneven as fine.Also think to have following effect in addition, i.e. solvent flash evaporation when jet drying wind, before the convection current of the coating liquid that the evaporation inequality that produces by solvent causes, viscosity rises and liquid flow can not take place.Surpass 55 weight % if spray the solid component concentration that is coated with rete of wind, can not obtain fully evaporating produced simultaneously levelling effect with solvent.In addition, if viscosity surpasses 20mPas, the formation of micro concavo-convex injustice that is coated with the surface of the rete difficulty that becomes.Particularly for the thickness and precision that is coated with rete being improved and making the homogenization in face of optical function characteristic, above-mentioned important document is important.In the measurement of viscosity, can use common instruments such as rotary or fall-ball type.Be as benchmark in the present invention in order to the value of measuring with galvanometer (rheometer): RS-1 (Heake corporate system).
In addition, the wind speed of the dry wind of above-mentioned injection is preferably 4～20m/sec, be preferably in the wind speed deviation of film wide cut direction ± below 30%.For the dry wind that sprays, if wind speed less than 4m/sec, then can not form the micro concavo-convex on the surface that is coated with rete, on the contrary,, be coated with the concavo-convex inhomogeneous of face and become excessive, because of the different masking liquids of situation disperse if surpass 20m/sec.So-called here wind speed is meant the wind speed at the near surface that is coated with rete, is meant from the wind speed of the surperficial 30mm that is coated with rete with interior measurement.In the measurement of wind speed, can use common modes such as propeller type, hot-wire.In the present invention, be to utilize value that Network リ モ マ ス one: Model 6531 (KANOMAX corporate system) measures as benchmark.About this, the wind direction of the dry wind of injection is also influential to it, if spray angle surpasses 30 ° with respect to 1 of base film, then is coated with the uneven of face and becomes excessive.
And then the temperature of the wind of above-mentioned injection is preferably 20～45 ℃, the temperature deviation on the film wide cut direction is preferably ± and below 15%.If the temperature of wind is that then evaporation rate of solvent accelerates more than 50 ℃, can not get the levelling effect.
The thickness of the preferred dried coating layer of the present invention is below the 30 μ m.If dry thickness surpasses 30 μ m, CONCENTRATION DISTRIBUTION or convection current being produced coating liquid by the thickness direction of rete lose easily by the homogeneity of rete.Manufacture method of the present invention is more suitable in by the dry thickness of rete being the situation of 0.05～50 μ m in particular for 0.1～10 μ m.Here, for dry thickness, in most cases be difficult to carry out actual measurement, in fact, sometimes also according to guaranteeing the method for aforesaid condition can obtain same effect from applying the wet thickness that contains solvent that liquid-solid body constituent concentration calculates.
The preferred above-mentioned rete 8 ' that is coated with of the present invention is optical functional layer.With regard to the precision that requires coating thickness and require the optical function characteristic with regard to the optical functional layer of the homogeneity in the face, the manufacture method of aforesaid tunicle thin slice is effective especially in large-area zone.
In addition, the manufacture method of tunicle thin slice of the present invention is preferred when above-mentioned optical functional layer is optical compensating layer.For the precision of the thickness that requires to be coated with rete and require the optical function characteristic for the optical compensating layer of the homogeneity in the face, aforesaid manufacture method is especially effective creating method.The back is described in detail optical compensating layer.
In addition, the manufacture method of tunicle thin slice of the present invention is preferred when taking the cholesteric layer of cholesteric structure and orientation at the formation molecule of above-mentioned optical compensating layer.For the precision that requires coating thickness and require the optical function characteristic for the optical compensating layer of the cholesteric structure of the homogeneity in the face, above-mentioned manufacture method is effective especially.The back is described in detail the cholesteric layer.
The present invention is the optical compensation plate that obtains when taking the cholesteric layer of cholesteric structure and orientation when above-mentioned optical functional layer is optical compensating layer or at the formation molecule of this optical compensating layer preferably.The optical functional layer that manufacture method by above-mentioned tunicle thin slice obtains, the precision height and the homogeneity of optical function characteristic in face of its coating thickness are outstanding, with regard to it as with regard to the optical compensation plate of the optical compensating layer of optical compensating layer or cholesteric structure, effective especially.
Here, the thickness of above-mentioned cholesteric layer is preferably the scope of 0.5～10 μ m.By the thickness of this scope, can prevent that as optical compensating layer the disorder or the transmissivity that are orientated from reducing, and can improve and select reflectivity, anti-coloring, productivity ratio etc.Detailed content as described later.
In addition, the formation molecule of preferred above-mentioned cholesteric layer is non-liquid crystal polymer, and this non-liquid crystal polymer is for carrying out polymerization or the crosslinked polymer that forms to the liquid crystal monomer of taking cholesteric structure and take place to be orientated.In such optical compensation plate, because polymerization or the crosslinked polymer that forms become non-liquid crystal liquid crystal property, so established cholesteric layer can not appear at yet in the liquid crystal molecule distinctive by variations in temperature cause to the variation of liquid crystalline phase, glassy phase, crystalline phase etc., can be described as this cholesteric structure and can not be subjected to the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of influence of temperature variation, stability.The detailed content aftermentioned.
Perhaps, the formation molecule of preferred above-mentioned cholesteric layer is a liquid crystal polymer, and this liquid crystal polymer is taked cholesteric structure and is orientated.Even the formation molecule is a liquid crystal polymer, also can be and the above-mentioned little cholesteric layer of variations in temperature that is made like by cooperating cholesteric crystal monomer or chirality agent, can become the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of stability.Detailed content as described later.
The present invention is an optical element, it is characterized in that stacked at least one deck polarizer on above-mentioned any optical compensation plate.By on the supereminent optical compensation plate of aforesaid stability, having formed the optical element of one deck polarizer stacked at least, can become optical element with outstanding optical function characteristic.The back is described in detail optical element.
The film 1 that can in the manufacture method of tunicle thin slice of the present invention, use according to suitably being determined of forming, apply liquid etc. by the kind of rete, its application purpose.Below it is elaborated.
As film 1,, except can enumerating transparent base film or orientation substrate, various glass plate, can also enumerate photoresist etc. so long as, then can be any material with respect to applying the layer that liquid has the material of wetability to a certain degree.
When forming optical functional layer, preferably use transparent base film as film 1 by coating liquid.As transparent base film, for example can enumerate by polyester based polymers such as PETG, PENs, cellulose-based polymer such as diacetyl cellulose, triacetyl cellulose, the Merlon based polymer, the film that transparent polymers such as acrylic acid series polymeric compounds such as polymethyl methacrylate constitute.In addition, also can enumerate by styrenics such as polystyrene, acrylonitrile-styrol copolymers, the olefin polymer of polyethylene, polypropylene, polyolefin, ethene-propylene copolymer etc. with ring-type or ENB structure, vinyl chloride-based polymer, the film that transparent polymers such as acid amides based polymer such as nylon or aromatic polyamide constitute.And then, can also enumerate film that constitutes by transparent polymers such as imide series polymer, sulfone based polymer, polyether sulfone based polymer, polyether-ether-ketone based polymer, polyphenylene sulfide based polymer, vinyl alcohol system polymer, vinylidene chloride based polymer, polyvinyl butyral resin based polymer, arylide based polymer, polyformaldehyde based polymer, epoxy based polymer or above-mentioned mixture of polymers etc.Be particularly suitable for using the film that constitutes by the few polymer of refractive index on the optics.
As transparent base film, from viewpoints such as polarised light characteristic or durability, cellulose-based polymer such as preferred triacetyl cellulose.Preferred especially triacetylcellulose film.
In addition, can enumerate as the spy and open the thin polymer film described in the 2001-343529 communique (WO01/37007), for example contain have on (A) side chain replace and/or not substituted imido thermoplastic resin and (B) have the resin combination of the thermoplastic resin of replacement and/or unsubstituted phenyl and itrile group on the side chain.As concrete example, can be exemplified as the film of the resin combination that contains the alternate copolymer that constitutes by isobutene and N-methyl maleimide and acrylonitrile-styrol copolymer.Film can use the film that is made of the mixing of resin combination extruding product etc.
In addition, transparent base film does not preferably have painted as far as possible.Therefore; the preferred Rth=[(nx+ny that uses)/and 2-nz] d is (wherein; nx, ny are the principal refractive index in the thin film planar, and nz is the refractive index on the film thickness direction, and d is a film thickness) phase difference value on the film thickness direction of expression for-90nm～+ protective film of 75nm.By use on this thickness direction phase difference value (Rth) for-90nm～+ film of 75nm, roughly can eliminate the polarizer that causes by protective film painted (optical clouration).Phase difference value on the thickness direction (Rth) more preferably-80nm～+ 60nm, be preferably especially-70nm～+ 45nm.
Can suit to determine the thickness of film 1, but, be about 10～500 μ m usually from viewpoints such as operations such as intensity or operability, thin layers.Be preferably 20～300 μ m especially, more preferably 30～200 μ m.
As long as the coating liquid of Shi Yonging can form and be coated with rete in the present invention, then can be any coating liquid, be coated with the resin material and the solvent of the function selection coating liquid of rete according to purpose.As can enumerating optical functional layer, antistatic backing, sealer, conducting function layer, adhesive phase, adhesive layer, transparent overlay etc. by the rete that is coated with of coating method formation of the present invention.Also have, utilize the formation that is coated with rete of coating liquid, can be undertaken by on film 1, forming tunicle in order.Thereby, as film 1, can use other to be pre-formed the film that other are coated with rete.In the present invention, as being coated with rete, under the situation when forming optical functional layer, being preferably formed thickness especially is the situation of the following optical functional layer of 30 μ m.As this optical functional layer, can enumerate hard conating, anti-reflection layer, phase separation layer, optical compensating layer etc.
As the transparent resin that forms hard conating, so long as firmly being coated with property outstanding (material that in the pencil hardness test of JIS K5400, shows the hardness more than the H), have full intensity and the outstanding resin of light penetration, just be not particularly limited.For example, can enumerate heat-curing resin, thermoplastic resin, uv curing resin, electron ray curing resin, biliquid hybrid resin etc.Wherein, preferably can utilize by the curing of ultraviolet ray irradiation and handle and utilize simple process operation just can form the uv curing resin of light diffusion layer efficiently.As uv curing resin, can enumerate various resins such as polyester system, acrylic acid series, carbamate system, acid amides system, silicone-based, epoxy system, comprise monomer, oligomer, polymer of ultraviolet hardening etc.The preferred uv curing resin that uses for example can be enumerated the resin with polymerizable ultraviolet functional group, wherein can enumerate to have this functional group more than 2 in composition, particularly have 3～6 the acrylic monomer or the resin of oligomer.In addition, in uv curing resin, be combined with ultraviolet polymerization initiator.
In hard conating, can contain electrically conductive microparticle.As electrically conductive microparticle, for example can enumerate metal particles such as aluminium, titanium, tin, gold, silver, ITO (indium oxide/tin oxide), ATO ultra microns such as (antimony oxide/tin oxide).About the average grain diameter of electrically conductive microparticle is preferably below the 0.1 μ m usually.In hard conating, add the metal of high index of refraction or the ultra micron of metal oxide, can be adjusted to high index of refraction.As the ultra micron of high index of refraction, can enumerate TiO
2, SnO
2, ZnO
2, ZrO
2, metal oxide such as aluminium oxide, zinc oxide ultra micron.About this ultramicronized average grain diameter is preferably below the 0.1 μ m usually.
In addition, make hard conating disperse to contain inorganic or organic sphere or atypic filler, can make its surface give anti-dazzle property for the micro concavo-convex structure.By making hard conating is concaveconvex shape, can give the light anti-dazzle property that diffusion causes.Even it is, also preferred from the viewpoint that can reduce reflectivity of giving of light diffusing.
As inorganic or organic sphere or atypic filler, for example can enumerate the crosslinked or uncrosslinked organic system particulate that constitutes by various polymer such as PMMA (polymethyl methacrylate), polyurethanes, polystyrene, melmac, glass, silica, aluminium oxide, calcium oxide, titanium oxide, zirconia, zinc oxide etc. are inorganic to be particle, and tin oxide, indium oxide, cadmium oxide, antimony oxide or their electric conductivity such as compound are inorganic to be particle etc.The average grain diameter of above-mentioned filler is preferably 0.5～10 μ m, more preferably 1～4 μ m.When utilizing particulate to form the micro concavo-convex structure, the use amount of particulate is preferably about 1～30 weight portion with respect to resin 100 weight portions.
In addition, in order to form hard conating (antiglare layer), can contain additives such as levelling agent, thixotropic agent, antistatic agent.When forming hard conating (antiglare layer),, can utilize outstanding particle easily form the micro concavo-convex structure on the antiglare layer surface by containing thixotropic agent (silica below the 0.1 μ m, mica etc.).
Formation material as anti-reflection layer, for example can enumerate resin system materials such as ultraviolet curing based acrylic resin, the mixed stocker material that has disperseed inorganic particles such as colloidal silica in resin has used the colloidal sol-gel based material of metal alkoxides such as tetraethoxysilane, titanium tetraethoxide etc.In addition, each material uses fluorochemical for the anti fouling performance of giving the surface.From the aspect of marresistance, the many outstanding tendencies of low-refraction layer material of inorganic component content are arranged, special preferred sols-gel based material.Colloidal sol-gel based material can use in part condensation two.
As above-mentioned fluorine-containing colloidal sol-gel based material, can be illustrated as the perfluoroalkyl alkoxy silane.As the perfluoroalkyl alkoxy silane, for example can enumerate with general formula (1): CF
3(CF
2)
nCH
2CH
2Si (OR)
3The compound of (in the formula, R represents that carbon number is 1～5 alkyl, and n represents 0～12 integer) expression.Specifically, for example can enumerate trifluoro propyl trimethoxy silane, trifluoro propyl triethoxysilane, ten trifluoro octyl group trimethoxy silanes, ten trifluoro octyltri-ethoxysilane, 17 fluorine decyl trimethoxy silanes, 17 fluorine decyl triethoxysilanes etc.Wherein, preferred said n is 2～6 compound.
In addition, also can in anti-reflection layer, add colloidal sol of silica, aluminium oxide, titanium oxide, zirconia, magnesium fluoride, ceria etc. being scattered in the solvent etc.In addition, also suitable additives such as complexed metal salt, metallic compound.
In order to form phase separation layer, optical compensating layer, for example can use polymerizable liquid crystal monomer and/or liquid crystal polymer.As above-mentioned polymerizable liquid crystal monomer, for example can enumerate nematic phase type liquid crystal liquid crystal property monomer.Under the situation that contains the polymerizable liquid crystal monomer, contain Photoepolymerizationinitiater initiater usually.Photoepolymerizationinitiater initiater can use various materials with being not particularly limited.
As nematic phase type liquid crystal liquid crystal property monomer, can enumerate polymerism functional groups such as having acryloyl group, methacryl endways and have the liquid crystal liquid crystal property monomer of the linearity atomic group (mesogene) that constitutes by annular unit therein.In addition,, also can use monomer polymerization functional group, and import cross-linked structure, so that durability improves with 2 above acryloyl groups, methacryl etc. as polymerism functional group.As the above-mentioned annular unit that becomes the linearity atomic group, for example can enumerate biphenyl system, phenol benzoate system, cyclohexylbenzene system, azoxy benzene series, azomethine system, azo benzene series, phenyl pyrimidine system, tolans system, benzoic acid diphenyl ester system, bis cyclohexane system, cyclohexyl benzene series, terphenyl system etc.Also have, the end of these annular units can have for example substituting groups such as cyano group, alkyl, alkoxyl, halogen.
As main chain liquid crystalline polymer, can enumerate condensation based polymer with the structure that combines the linearity atomic group that constitutes by aromatic series unit etc., for example can enumerate polymer such as polyester system, polyamide-based, polycarbonate-based, polyesterimide system.As the above-mentioned aromatic series unit that becomes the linearity atomic group, can enumerate the monomer of phenyl system, biphenyl base system, naphthalene system.These aromatic series unit can have substituting groups such as cyano group, alkyl, alkoxyl, halogen.
As side chain liquid crystalline polymer, can enumerate main chain with polyacrylate system, polymethacrylates system, polysiloxane series, poly-malonate system and be skeleton and have the compound of the linearity atomic group that constitutes by annular unit etc. at side chain.As the above-mentioned annular unit that becomes the linearity atomic group, for example can enumerate biphenyl system, phenol benzoate system, cyclohexylbenzene system, azoxy benzene series, azomethine system, azo benzene series, phenyl pyrimidine system, tolans system, benzoic acid diphenyl ester system, bis cyclohexane system, cyclohexyl benzene series, terphenyl system etc.Also have, the end of these annular units also can have for example substituting groups such as cyano group, alkyl, alkoxyl, halogen.
The arbitrary line shape atomic group of above-mentioned polymerizable liquid crystal monomer, liquid crystal polymer also can be by the spacer portion combination of giving bendability.As spacer portion, can enumerate polymethylene chain, polyformaldehyde chain etc.The repeat number that forms the construction unit of spacer portion is suitable decision of chemical constitution by linearity atom regiment headquarters, but the repetitive of polymethylene chain is 0～20, is preferably 2～12 that the repetitive of polyformaldehyde chain is 0～10, is preferably 1～3.
In above-mentioned nematic phase type liquid crystal liquid crystal property monomer, liquid-crystalline polymer, contain the compound that in mesomorphic state, shows vertical (homeotropic) orientation.In addition, in above-mentioned nematic phase type liquid crystal liquid crystal property monomer, liquid-crystalline polymer, in mesomorphic state, present the cholesteric phase, can cooperate cholesteric crystal monomer or chirality agent in order to make it.In addition, can use the cholesteric crystal polymer.The cholesteric crystal that obtains can be used as mutually selects reflective film to use.As the chirality agent,, just be not particularly limited as long as have the optical activity base and do not make the compound of the orientation disorder of nematic phase type liquid crystal liquid crystal property monomer etc.The chirality agent can have liquid crystal liquid crystal property, also can not have liquid crystal liquid crystal property, can preferably use the compound that shows cholesteric crystal, the chirality agent can be used any compound that has or do not have reactive base, and the hear resistance of the cholesteric crystal oriented film that obtains from curing, the viewpoint of solvent resistance preferably have the compound of reactive base.As reactive base, for example can enumerate acryloyl group, methacryl, azido, epoxy radicals etc.
In addition, the optical anisotropic layer that the tilted alignment layer by cholesteric crystal can be constituted uses as optical compensation phase difference phase (optical compensating layer).As cholesteric crystal, can be illustrated in above-mentioned spy and open the middle liquid crystal of putting down in writing such as flat 8-94836 communique.
Also have, above-mentioned liquid crystal monomer, liquid crystal polymer can be launched on alignment films.As alignment films, can use known all the time various alignment films, for example can use by on transparent base, form film that constitutes by polyimides or polyvinyl alcohol etc. and the film that its method of carrying out friction treatment is formed, to transparent membrane carried out the oriented film of stretch processing, to the polymer with cinnamate skeleton or azobenzene skeleton or the film of polyimides irradiation polarized ultraviolet etc.
Above-mentioned coating liquid for example can wait and modulate by dissolving in appropriate solvent, the above-mentioned liquid crystal monomer of dispersion.Above-mentioned solvent is not particularly limited, for example can use chloroform, carrene, carbon tetrachloride, dichloroethanes, tetrachloroethanes, carrene, trichloro-ethylene, tetrachloro-ethylene, chlorobenzene, halogenated hydrocarbons such as o-dichlorohenzene, phenol, parachlorophenol, o-chlorphenol, metacresol, orthoresol, phenols such as paracresol, benzene, toluene, dimethylbenzene, methoxybenzene, 1,2-dimethoxy benzenes etc. are aromatic hydrocarbon based, acetone, methyl ethyl ketone (MEK), methyl iso-butyl ketone (MIBK), cyclohexanone, cyclopentanone, 2-Pyrrolidone, the ketone series solvent of N-N-methyl-2-2-pyrrolidone N-etc., ethyl acetate, ester series solvents such as butyl acetate, the tert-butyl alcohol, glycerine, ethylene glycol, triethylene glycol, glycol monoethyl ether, diethylene glycol dimethyl ether, propane diols, DPG, 2-methyl-2, pure series solvents such as 4-pentanediol, dimethyl formamide, the acid amides series solvent of dimethyl acetamide and so on, acetonitrile, the nitrile series solvent of butyronitrile and so on, diethyl ether, butyl oxide, the ether series solvent of oxolane diox and so on, perhaps carbon disulfide, ethyl cellosolve, butyl cellosolve etc.Wherein preferably toluene, dimethylbenzene, mesitylene, MEK, methyl iso-butyl ketone (MIBK), cyclohexanol, ethyl cellosolve, butyl cellosolve, ethyl acetate, butyl acetate, propyl acetate, acetic acid ethyl cellosolve.These solvents for example can use a kind of, also can mix use more than 2 kinds.
Resinous principle concentration to coating liquid is not particularly limited, and is generally 1～60 weight %, is preferably 5～50 weight %.Can in coating liquid, contain various additives according to the purposes that is employed by rete of utilizing coating liquid to form.
In addition, for the formation molecule of the cholesteric layer that forms optical compensating layer, for example be non-liquid crystal polymer, preferably the liquid crystal monomer of taking cholesteric structure and be orientated is carried out polymerization or crosslinked polymer.If be such formation, as described later, above-mentioned monomer can be taked cholesteric structure and make its orientation in order to show liquid crystal liquid crystal property, and further makes between monomer polymerization etc. takes place, and fixes above-mentioned orientation thus.Then, use liquid crystal monomer, but by said fixing, the polymer of polymerization becomes non-liquid crystal liquid crystal property.So, established cholesteric layer is taked the mutually such cholesteric structure of similar cholesteric crystal, but owing to do not constitute by liquid crystal molecule, so for example can not occur in the distinctive variation that causes by variations in temperature in the liquid crystal molecule to liquid crystalline phase, glassy phase, crystalline phase.Thereby, become its cholesteric structure and can not be subjected to influence of temperature variation and stable supereminent optical thin film (cholesteric layer), for example we can say that be useful especially as optical compensation with phase-contrast film (optical compensation plate).
Above-mentioned liquid crystal monomer is preferably used the monomer of chemical formula described later (1) expression.Such liquid crystal monomer is generally nematic phase type liquid crystal liquid crystal property monomer, for example utilizes above-mentioned chirality agent to be endowed distortion, finally takes cholesteric structure.In addition, fixing in order to be orientated in above-mentioned cholesteric layer, need between above-mentioned monomer, carry out polymerization or crosslinked, so above-mentioned monomer preferably contains at least a of polymerizable monomer and cross-linkable monomer.
Above-mentioned cholesteric layer preferably further contains at least a of polymerizer and crosslinking agent, for example can use materials such as ultraviolet curing agent, light curing agent, thermal curing agents.
The ratio of the liquid crystal monomer in above-mentioned cholesteric layer is preferably in the scope of 75～95 weight %, more preferably in the scope of 80～90 weight %.In addition, with respect to the ratio of the chirality agent of above-mentioned liquid crystal monomer preferably in the scope of 5～23 weight %, more preferably in the scope of 10～20 weight %.In addition, with respect to the ratio of the crosslinking agent or the polymerizer of above-mentioned liquid crystal monomer, be preferably the scope of 0.1～10 weight %, the scope of 0.5～8 weight % more preferably is preferably the scope of 1～5 weight % especially.
Thickness to above-mentioned optical thin film (cholesteric layer) is not particularly limited, for example under situation as the phase-contrast film (optical compensation plate) that compensates usefulness, from preventing that orientation disorder or transmissivity are low, select reflectivity, preventing viewpoint such as painted, productivity ratio, be preferably the scope of 0.1～10 μ m, the scope of 0.5～8 μ m more preferably is preferably the scope of 1～5 μ m especially.
Optical thin film of the present invention (cholesteric layer) for example can be only to be formed by aforesaid cholesteric layer, also can be further to contain substrate and the stacked duplexer of above-mentioned cholesteric layer on aforesaid substrate.
Then, the manufacture method of optical thin film of the present invention (cholesteric layer) is that the formation molecule that contains cholesteric layer and above-mentioned layer is taked cholesteric structure and the manufacture method of the optical thin film that is orientated, comprising:
(1) will contain at least a in the two of liquid crystal monomer, above-mentioned chirality agent, polymerizer and crosslinking agent and go up in oriented substrate (base film) at the coating liquid of prescribed limit with respect to the ratio of the chirality agent of above-mentioned liquid crystal monomer and to launch, form the operation of developer layer (being coated with rete);
(2) on the surface of above-mentioned developer layer along the optics of the direction of travel jet drying wind of oriented substrate;
(3) above-mentioned developer layer is implemented the operation of heat treated for the orientation that above-mentioned liquid crystal monomer is become taked cholesteric structure; And
(4) form the cholesteric layer of non-liquid crystal polymer for the orientation of fixing above-mentioned liquid crystal monomer, above-mentioned developer layer is implemented the operation of at least a processing of polymerization processing and crosslinking Treatment.
By such manufacture method, can make the optical thin film of the selection reflection wavelength frequency band of regulation.That is, find above-mentioned selection reflection wavelength frequency band to be controlled at the scope of regulation by so controlling the cooperation ratio of liquid crystal monomer and chirality agent.
An example to the manufacture method of optical thin film of the present invention is specifically described below.At first, prepare to contain above-mentioned liquid crystal monomer, above-mentioned chirality agent, above-mentioned crosslinking agent and the polymerizer at least a coating liquid in the two.
As above-mentioned liquid crystal monomer, for example be preferably nematic phase type liquid crystal liquid crystal property monomer, specifically, can enumerate monomer with following formula (1) expression.These liquid crystal monomers can be for a kind of, also can and with two or more.
In above-mentioned formula (1), A
1And A
2Represent the polymerism base respectively, can be identical or different.In addition, A
1And A
2Either party can be hydrogen.X represent respectively singly-bound ,-O-,-S-,-C=N-,-O-CO-,-CO-O-,-O-CO-O-,-CO-NR-,-NR-CO-,-NR-,-O-CO-NR-,-NR-CO-O-,-CH
2-O-or-NR-CO-NR, in above-mentioned X, R represents H or C1～C4 alkyl, M represents the linearity atomic group.
In above-mentioned formula (1), X can be identical or different, and is preferably identical.
In the monomer of above-mentioned formula (1), A
2Preferably respectively with respect to A
1Be configured in the ortho position.
In addition, above-mentioned A
1And A
2Independent respectively, preferably use following formula
Z-X-(Sp)
n ...(2)
Expression, A
1And A
2Be preferably identical base.
In above-mentioned formula (2), Z represents the bridging property base, and X is identical with above-mentioned formula (1), and Sp represents the spacer portion that the alkyl by the straight or branched with 1～30 C atom constitutes, and n represents 0 or 1.Carbochain among the above-mentioned Sp for example also can be by the calkings such as alkyl imino of sulphur, non-adjacent imino group or C 1～C4 in the oxygen in the ether functional group, the thioether functional group.
In above-mentioned formula (2), any one of the atomic group that Z preferably represents with following formula.In following formula,, for example can enumerate bases such as methyl, ethyl, n-pro-pyl, isopropyl, normal-butyl, isobutyl group, the tert-butyl group as R.
In addition, in above-mentioned formula (2), Sp is preferably any one of the atomic group represented with following formula, and in following formula, m is preferably 1～3, and p is preferably 1～12.
-(CH
2)
p-，-(CH
2CH
2O)
mCH
2CH
2-，-CH
2CH
2SCH
2CH
2-，
-CH
2CH
2NHCH
2CH
2-，
In above-mentioned formula (1), M preferably uses following formula (3) expression, and in following formula (3), X is identical with X in the above-mentioned formula (1).Q for example represents to replace or unsubstituted alkylidene or aromatic hydrocarbon atomic group, in addition, and for example can be for replacing or unsubstituted straight chain or side chain C1～C12 alkylidene etc.
When above-mentioned Q is above-mentioned aromatic hydrocarbon atomic group, for example be preferably the atomic group represented with following formula or their replacement analog.
As the replacement analog of the aromatic hydrocarbon atomic group of in above-mentioned formula, representing, for example can on 1 aromatic ring, have 1～4 substituting group, in addition, also can on 1 aromatic ring or base, have 1 or 2 substituting group.Above-mentioned substituting group can be identical or different respectively.As above-mentioned substituting group, for example can enumerate C1～C4 alkyl, nitro, halogens such as F, C, Br, I, phenyl, C1～C4 alkoxyl etc.
As the object lesson of above-mentioned liquid crystal monomer, for example can enumerate monomer with following formula (4)～(19) expression.
Above-mentioned liquid crystal monomer shows the temperature range of liquid crystal liquid crystal property because of its kind is different, for example is preferably 40～120 ℃ scope, 50～100 ℃ scope more preferably, is preferably 60～90 ℃ scope especially.
As above-mentioned chirality agent, as mentioned above, for example so long as become the material that the mode of cholesteric structure is orientated so that above-mentioned liquid crystal monomer is composed the son distortion, just be not particularly limited, but the agent of preferred polymeric chirality can be used aforesaid compound.These chirality agent can be for a kind of, also can and with two or more.
Specifically, as above-mentioned polymerizable chiral agent, for example can use chipal compounds with following general formula (20)～(23) expression.
(Z-X
5)
nCh (20)
(Z-X
2-Sp-X
5)
nCh (21)
(P
1-X
5)
nCh (22)
(Z-X
2-Sp-X
3-M-X
4)
nCh (23)
Above-mentioned various in, Z is identical with above-mentioned formula (2), Sp is identical with above-mentioned formula (2), X
2, X
3And X
4Independently of one another, the expression chemical single bond ,-O-,-S-,-O-CO-,-CO-O-,-O-CO-O-,-CO-NR-,-NR-CO-,-O-CO-NR-,-NR-CO-O-,-NR-CO-NR-, above-mentioned R represents N, C1～C4 alkyl.In addition, X
5The expression chemical single bond ,-O-,-S-,-O-CO-,-CO-O-,-O-CO-O-,-CO-NR-,-NR-CO-,-O-CO-NR-,-NR-CO-O-,-NR-CO-NR-,-CH
2O-,-O-CH
2-,-C=N-,-N=CH-or-N=N-.R and above-mentioned the same H, the C1～C4 alkyl of representing.M and above-mentioned the same linearity atomic group, the P of representing
1Expression is by hydrogen, 1～3 C1～C30 alkyl that C1～the C6 alkyl is replaced, C1～C30 acyl group or C3～C8 cycloalkyl, and n represents 1～6 integer.Ch represents the chirality base of n valency.In above-mentioned formula (23), X
3And X
4Preferred at least one side is-O-CO-O-,-O-CO-NR-,-NR-CO-O-or-NR-CO-NR-.In addition, in above-mentioned formula (22), work as P
1During for alkyl, acyl group or cycloalkyl, for example its carbochain also can be by the alkyl imino calking of sulphur, non-adjacent imino group or C1～C4 in the oxygen in the ether functional group, the thioether functional group.
As the chirality base of above-mentioned Ch, for example can enumerate the atomic group of representing with following formula.
In above-mentioned atomic group, L is C1～C4 alkyl, C1～C4 alkoxyl, halogen, COOR, OCOR, CONHR or NHCOR, and above-mentioned R represents C1～C4 alkyl.Also have, the end of the atomic group of representing in above-mentioned formula is represented to close hand with the binding site (Knot of adjacent group).
In above-mentioned atomic group, be preferably the atomic group of representing with following formula especially.
In addition, with the chipal compounds of above-mentioned (21) or (23) expression, for example preferred n is 2, Z represents H
2C=CH-, Ch atomic group for representing with following formula.
As the object lesson of above-mentioned chipal compounds, for example can enumerate compound with following formula (24)～(44) expression.Also have, the distortion power of these chipal compounds is 1 * 10
-6Nm
-1(wt%)
-1More than.
Except aforesaid chipal compounds, for example can preferably use the chipal compounds of enumerating in RE-A4342280 number and the German patent application No. 19520660.6 and No. 19520704.1.
Above-mentioned polymerizer and crosslinking agent are not particularly limited, for example can use compound as described below.As above-mentioned polymerizer, for example can use benzoyl peroxide (BPO), azodiisobutyronitrile (AIBN) etc., as above-mentioned crosslinking agent, for example can use isocyanate-based crosslinking agent, epoxy is crosslinking agent, metal-chelating crosslinker agent etc.These can use a kind of arbitrarily, also can be also with two or more.
The adding proportion of above-mentioned chirality agent for example can be as required helix pitch, the selection reflection wavelength frequency band that needs suitably determine, be the scope of 5～23 weight % with respect to the adding proportion of above-mentioned liquid crystal monomer, be preferably the scope of 10～20 weight %.As mentioned above, can be by the adding proportion between control liquid crystal monomer like this and the chirality agent selection wavelength band of the optical thin film that forms be set in the above-mentioned scope.When with respect to the ratio of the chirality agent of liquid crystal monomer during, then the selection reflection wavelength frequency band of the optical thin film that forms is controlled at the low wavelength side difficulty that becomes less than 5 weight %.In addition, when aforementioned proportion during greater than 23 weight %, since liquid crystal monomer carry out cholesteric orientation temperature range, be that the temperature range that above-mentioned liquid crystal monomer becomes liquid crystalline phase becomes narrow, so need carry out the temperature control in orientation procedure described later closely, make the difficulty that becomes and make.
For example, when using the chirality agent of identical distortion power, become with respect to the many formed selection reflection wavelength of the side frequency bands of adding proportion of the chirality agent of liquid crystal monomer and to hang down the wavelength side.In addition, for example, when identical with respect to the adding proportion of the chirality agent of liquid crystal monomer, for example, the selection reflection wavelength frequency band of the formed optical thin film of a side that the distortion power of chirality agent is big becomes low wavelength side.As object lesson, when in the scope of above-mentioned selection reflection wavelength band setting at 200～220nm of the optical thin film that will form, for example, can cooperate distortion power is 5 * 10
-4Nm
-1(wt%)
-1The chirality agent and to make it be 11～13 weight % with respect to liquid crystal monomer, in the time of in the scope of above-mentioned selection reflection wavelength band setting at 290～310nm, for example, can cooperate distortion power is 5 * 10
-4Nm
-1(wt%)
-1The chirality agent and to make its relative liquid crystal monomer be 7～9 weight %.
In addition, combination to above-mentioned liquid crystal monomer and above-mentioned chirality agent is not particularly limited, specifically, can enumerate the combination etc. of the chirality agent of the monomer of combination, above-mentioned formula (11) of the chirality agent of the monomer of above-mentioned formula (10) and above-mentioned formula (38) and above-mentioned formula (39).
In addition, be the scope of 0.1～10 weight % for example with respect to the crosslinking agent of above-mentioned liquid crystal monomer or the adding proportion of polymerizer, be preferably the scope of 0.5～8 weight %, more preferably the scope of 1～5 weight %.If with respect to the ratio of the crosslinking agent of above-mentioned liquid crystal monomer or polymerizer more than 0.1 weight %, for example the curing of cholesteric layer becomes very easy, in addition, if below 10 weight %, for example above-mentioned liquid crystal monomer carry out cholesteric orientation temperature range, be that the temperature that above-mentioned liquid crystal monomer becomes liquid crystalline phase becomes sufficient scope, be more prone to so the control of the temperature in orientation procedure described later becomes.
In addition, also can for example suitably cooperate various additives as required in the above-mentioned coating liquid.As above-mentioned additive, for example can enumerate age resister, modifier, surfactant, dyestuff, pigment, anti-blushing agent, ultra-violet absorber etc.These additives for example can add any, also can be also with two or more.Specifically, as above-mentioned age resister, for example can use known in the past compounds such as phenol system compound, amine compound, organic sulfur based compound, phosphine based compound.In addition, as above-mentioned modifier, for example can use known in the past compounds such as glycols, silicone or alcohols.In addition, can add above-mentioned surfactant for example to make the surface smoothing of optical thin film.Specifically, for example can use surfactants such as silicone-based, acrylic acid series, fluorine system, preferred especially silicone-based.
When use liquid crystal monomer like this, modulated coating liquid for example demonstrates the outstanding viscosity of operability of coating, expansion etc.The viscosity of above-mentioned coating liquid is usually according to the concentration of above-mentioned liquid crystal monomer or temperature etc. and different, and when the scope of the monomer concentration in the above-mentioned coating liquid at 5～70 weight %, its viscosity for example in the scope of 0.2～20mPas, is preferably 0.5～15mPas, is preferably 1～10mPas especially.Specifically, when the monomer concentration in the above-mentioned coating liquid is 30 weight %, for example in the scope of 2～5mPas, preferably in the scope of 3～4mPas.If the viscosity of above-mentioned coating liquid is more than the 0.2mPas, for example can further prevent by making the generation of the liquid flow that coating liquid walking causes, in addition, if be below the 20mPas, for example can make surperficial levelability outstanding, can further prevent uneven thickness, screening characteristics is also outstanding.Also have, as above-mentioned viscosity, demonstration be that temperature is 20～30 ℃ a scope, but be not limited to this temperature.
Then, above-mentioned coating liquid is coated formed developer layer on the orientation substrate.
Above-mentioned coating liquid for example can be coated with the mobile expansion of known method in the past such as method, spraying process by rolling method, spin-coating method, wire bar (wire bar) coating process, dip coating, extruding (extrusion) method, curtain, wherein, from the viewpoint of coating efficiency, preferred spin-coating method, extrusion.
As above-mentioned orientation substrate, as long as make the substrate that can make above-mentioned liquid crystal monomer that orientation takes place, just be not particularly limited, for example can use the substrate that the surface of various plastic sheetings or plastic tab is carried out friction treatment by artificial silk cloth etc.Above-mentioned plastics are not particularly limited, for example can enumerate triacetyl cellulose (TAC), polyethylene, polypropylene, poly-polyolefin such as (4-methylpentenes-1), polyimides, polyimide amide, PEI, polyamide, polyether-ether-ketone, polyether-ketone, polyketone thioether (polyketone sulfide), polyether sulfone, polysulfones, polyphenylene sulfide, polyphenylene oxide, PETG, polybutylene terephthalate (PBT), PEN, polyacetals, Merlon, polyaryl thing (Port リ ア リ レ one ト), acrylic resin, polyvinyl alcohol, polypropylene, cellulose-based plastics, epoxy resin, phenol resin etc.In addition, also can use at metal substrates such as aluminium, copper, iron, pottery system substrate disposes the substrate of aforesaid plastic sheeting or thin slice on the surface of glass system substrate etc.; Perhaps on above-mentioned surface, formed SiO
2The substrate that the oblique evaporation film forms etc.In addition, as orientation substrate, also can use the oriented film that to implement stretch processings such as simple tension etc. to be laminated in the duplexer that forms on aforesaid plastic sheeting or the thin slice as alignment films with birefringence.And then, when substrate self has birefringence, do not need aforesaid friction treatment or stacked from the teeth outwards birefringence mode film etc., so preferred.As the method for like this substrate self being given birefringence, in the formation of substrate, for example except stretch processing, can also enumerate and cast or the method for extrusion modling etc.
Then, by above-mentioned developer layer is implemented heat treated, can above-mentioned liquid crystal monomer be orientated.Owing in above-mentioned developer layer, contain above-mentioned liquid crystal monomer and chirality agent simultaneously, under the state of being given distortion by above-mentioned chirality agent, be orientated so become the liquid crystal monomer of liquid crystalline phase (mesomorphic state).That is, liquid crystal monomer demonstrates cholesteric structure (helical structure).
The temperature conditions of above-mentioned heat treated for example can be according to the kind of above-mentioned liquid crystal monomer, specifically show that according to above-mentioned liquid crystal monomer the temperature of liquid crystal liquid crystal property suitably determines, usually 40～120 ℃ scope, preferably 50～100 ℃ scope, more preferably 60～90 ℃ scope.If said temperature more than 40 ℃, can make liquid crystal monomer fully be orientated usually, if said temperature below 120 ℃, for example aspect hear resistance, the selectivity of aforesaid various oriented substrate is also wide.
Then, by implementing crosslinking Treatment or polymerization processing on the above-mentioned developer layer that has been orientated at above-mentioned liquid crystal monomer, make above-mentioned liquid crystal monomer and chirality agent generation polymerization or crosslinked.Like this, liquid crystal monomer is directly polymerization, crosslinked mutually under the state of taking cholesteric structure and being orientated, perhaps with chirality agent polymerization or crosslinked, above-mentioned state of orientation is fixed.Then, established polymer becomes non-liquid crystal polymer by fixing of above-mentioned state of orientation.
Stating polymerization processing or crosslinking Treatment for example can suitably determine according to the polymerizer that uses or the kind of crosslinking agent.For example, under the situation of using photopolymerizer or photocrosslinking agent, implement illumination and penetrate; Under the situation of using polymerizable ultraviolet agent or ultraviolet-crosslinkable agent, can implement the ultraviolet ray irradiation.
By such manufacture method, can on above-mentioned orientation substrate, obtain forming by the non-liquid-crystalline polymer of taking cholesteric structure and be orientated and to select the reflection wavelength frequency band be the optical thin film of 100nm～320nm.This optical thin film since as previously mentioned its orientation be fixed, institute thinks non-liquid crystal liquid crystal property.Thereby, can not change and become for example liquid crystalline phase, glassy phase, crystalline phase by variations in temperature, the change in orientation that is caused by variations in temperature does not appear.So, can be used as temperature influence and phase-contrast film that performance is high.In addition, owing to select the reflection wavelength frequency band to be controlled in the above-mentioned scope, so can suppress aforesaid light leakage etc.
In addition, manufacture method of the present invention is not limited to the method that formed by non-liquid-crystalline polymer, also can use aforesaid liquid crystal polymer.As mentioned above, can in above-mentioned nematic phase type liquid crystal liquid crystal property monomer, liquid-crystalline polymer, cooperate cholesteric crystal monomer or chirality agent so that under mesomorphic state, present the cholesteric phase, in addition, for the cholesteric crystal polymer, take cholesteric structure also to be orientated by liquid crystal polymer, can obtain the effect identical with the method that forms by non-liquid-crystalline polymer.
Also have, if use liquid crystal monomer, the above-mentioned selection reflection wavelength of not only easier control frequency band, and it is also easy to apply the setting of viscosity etc. of liquid as described above becomes and is more prone to so form film, and the property handled is also very outstanding.In addition, established cholesteric layer also becomes the outstanding layer of surface.So, we can say the optical thin film that can form the outstanding more and slimming of quality.
In addition, above-mentioned optical thin film for example also can be peeled off from above-mentioned orientation substrate, and directly the phase-contrast film of using etc. as aforesaid compensation (optical compensation plate) uses, also can be under the state that is laminated on the above-mentioned orientation substrate, as polarizer.
When being used as the duplexer of above-mentioned optical thin film and above-mentioned orientation substrate, above-mentioned orientation substrate is preferably the plastic base of light transmission.As above-mentioned plastic sheeting, for example can enumerate by TAC etc. cellulose-based, polyethylene, polypropylene, poly-polyolefin such as (4-methylpentenes-1), polyimides, polyamidoimide, polyamide, PEI, polyether-ether-ketone, polyketone thioether, polyether sulfone, polysulfones, polyphenylene sulfide, polyphenylene oxide, PETG, polybutylene terephthalate (PBT), PEN, polyacetals, Merlon, polyaryl thing (Port リ ア リ レ one ト), acrylic resin, polyvinyl alcohol, polypropylene, cellulose-based plastics, epoxy resin, phenol resin, polynorbornene, polyester, polystyrene, polyvinyl chloride, Vingon, the film that liquid crystal polymer etc. form.These films can be optical isotropies, also can be anisotropy, all do not have to hinder.In these plastic sheetings, from solvent resistance or stable on heating viewpoint, for example preferred each film that has formed by polypropylene, PETG, PEN.
Aforesaid light transmission orientation substrate for example can be individual layer, and for example from improving the adhering viewpoint of intensity, hear resistance, polymer or liquid crystal monomer, also can be the duplexer of stacked dissimilar polymer.
In addition, also can be the substrate that does not produce the phase difference that causes by birefringence, for example, can be that the polarisation of light light state that is polarized light separating layer reflection with elimination is the substrate that purpose produces the phase difference that is caused by birefringence.The elimination of this polarized light state by improve the light utilization ratio and with sameization of light source light, in the form and aspect that suppress to be caused by vision change effectively.As the transparency carrier that produces the phase difference that causes by above-mentioned birefringence, for example can be to use the oriented film etc. of various polymer systems to control the substrate of the refractive index of thickness direction.Above-mentioned control example is as being undertaken by adding hot-stretch etc. after making thin polymer film and heat-shrinkable film bonding.
In addition, above-mentioned optical thin film is transferred to other substrate (below, be called " the 2nd substrate ") from above-mentioned orientation substrate (below, be called " the 1st substrate "), in that above-mentioned optical thin film is stacked under the state of above-mentioned the 2nd substrate, for example also can be used as polarizer.Specifically, can stacked adhesive layer or adhesive phase at least one surface of above-mentioned the 2nd substrate (below, be called " adhesive layer etc. "), after the optical thin film on this adhesive layer and above-mentioned the 1st substrate is bonding, peel off above-mentioned the 1st substrate from above-mentioned optical thin film.
In this case, the orientation substrate as launching above-mentioned coating liquid for example is not subjected to restrictions such as its light transmission or thickness, preferably selects from the viewpoint of hear resistance or intensity.
On the other hand, above-mentioned the 2nd substrate for example is not limited at aspects such as hear resistances.For example, preferred light-transmitting substrate, light transmission protective film etc. specifically, can be enumerated transparent glass or plastic sheeting etc.
In addition, for example preferred optical isotropy of above-mentioned the 2nd substrate, and, also can be anisotropy on the optics according to the purposes of above-mentioned optical thin film.As so anisotropic the 2nd substrate on the optics that has, for example can be to above-mentioned plastic sheeting implemented stretch processing etc. phase-contrast film, have light scattering light-scattering film, have diffraction can diffraction film, polarized light film etc.
Also have, when becoming the duplexer of above-mentioned cholesteric layer and above-mentioned various light-transmitting substrates etc., above-mentioned cholesteric layer can be stacked on the two sides of above-mentioned light-transmitting substrate, and its stacked number can be one deck, also can be for more than two-layer.
Optical thin film of the present invention also can further stacked in its surface adhesive layer or adhesive layer.By laminating adhesive layer like this etc., for example can make with the stacked of member such as other optical layers such as polarizer or liquid crystal cells to become easily, can prevent peeling off of optical thin film.
Then, be that the situation of hard-coated film describes to optical element of the present invention.In this case, hard-coated film can have as the hard conating of optical functional layer and transparent base film (base film 1) and constitute.On the transparent base film side of hard-coated film, can form for example optical layers such as polariscope, phase separation layer or optical compensating layer.In addition, also can use anti-reflection layer to replace above-mentioned hard conating.
Polariscope is not particularly limited, can uses various polariscopes.As polariscope, for example can enumerate, divide on the hydrophilic macromolecule film such as saponification film the material of simple tension after the dichroic substance such as absorption iodine or dichroic dye at polyvinyl alcohol film, part dimethoxym ethane polyvinyl alcohol film, ethene-vinyl acetate co-polymer pastern; Polyenes such as the desalination acid treatment thing of the processed thing of polyvinyl alcohol or polyvinyl chloride are oriented film etc.Wherein, the polariscope of preferably forming by dichroic substance such as polyvinyl alcohol film and iodine.There is no particular limitation to these polariscopic thickness, but be generally about 5～80 μ m.
With polyvinyl alcohol film with iodine staining after the polariscope that simple tension forms for example, after can dyeing by the aqueous solution that polyvinyl alcohol be impregnated in iodine, make for 3～7 times that are stretched to raw footage.As required, also can impregnated in the aqueous solution of boric acid or KI etc.In addition, as required, also can be before dyeing polyvinyl alcohol film be impregnated in the water and wash.By the washing polyvinyl alcohol film, except can the lip-deep dirt of flush away polyvinyl alcohol film and anti-blocking agent, can also prevent non-uniform phenomenons such as stain by making the polyvinyl alcohol film swelling.Stretch and both can after with iodine staining, carry out,, perhaps also can after stretching, dye with iodine on one side also can stretch by an Edge Coloring.Also can or stretch in the water-bath in the aqueous solution of boric acid or KI etc.
Above-mentioned polariscope can be provided with transparent protective film in one or both sides usually and use as polarizer.The material that transparent protective film preferably has good character in each side such as the transparency, mechanical strength, heat endurance, moisture shielding, isotropism.As transparent protective film, can use and above-mentioned illustrative transparent base film identical materials.Above-mentioned transparent protective film can use the inside and outside transparent protective film that is made of identical polymeric material, also can use the transparent protective film that is made of different polymeric material etc.The preferred material that has good character in each side such as the transparency, mechanical strength, heat endurance, moisture shieldings that uses.In addition, transparent protective film is that optical anisotropies such as phase difference are few more preferred more mostly.As the polymer that forms above-mentioned transparent protective film, triacetyl cellulose is the most suitable.Under the situation of the one or both sides of above-mentioned hard-coated film being located at polariscope (polarizer), the transparent base film of hard-coated film can the polariscopic transparent protective film of double as.Thickness to transparent protective film is not particularly limited, but is generally about 10～300 μ m.
The antireflection polarizer of laminated polarizing sheet on hard-coated film; can be the antireflection polarizer of stacked in order transparent protective film, polariscope, transparent protective film on hard-coated film, also can be the antireflection polarizer of laminated polarizing mirror, transparent protective film in order on hard-coated film.
In addition, not having on bonding polariscopic of above-mentioned transparent protective film, can implement hard conating or anti-adhesion or purpose and handle.Implement purpose that hard conating handles and be to prevent the damaged surfaces of polarizer etc., mode that for example can be by the curing tunicle that the additional hardness that is made of suitable uv curing resin such as acrylic acid series, silicone-based, sliding properties etc. are good on the surface of transparent protective film etc. forms.In addition, implementing purpose that anti-adhesion handles is the adhesion that prevents with adjacent layer.Also have, above-mentioned hard conating, antiblocking layers etc. except can being set to transparent protective film self, can also as other optical layers and be arranged with the transparent protective film branch.
In addition, can insert for example hard conating, plasmasphere, adhesive layer, adhesive phase, antistatic backing, conductive layer, choke (gas barrier) layer, steam screen layer, moisture screen layer etc. at the interlayer of polarizer, perhaps also can be laminated in the surface of polarizer.In addition, in the stage of each layer that makes polarizer, also can by in the formation material of each layer to conductive particle or antistatic agent, various particulate, plasticizer etc. add, mixing etc. and improving as required.
As optical component, when practical application, can use the stacked optical thin film of other optical element (optical layers) on above-mentioned polarizer.This optical layers is not particularly limited, can be exemplified as the member that the reflecting plate that uses more than 1 layer or 2 layers or half transmitting plate, polarizer (comprising 1/2 or 1/4 wavelength plate), viewing angle compensation film etc. use in can the formation at liquid crystal indicator etc.Reflection type polarizer that forms particularly preferably in further stacked reflecting plate or semi-penetration plate on the polarizer or semi-transmission type polarizer, on the polarizer further the ellipsoidal polarizing plate that forms of laminated phase-difference plate or circular polarizing disk, the wide visual angle polarizer that forms at further stacked viewing angle compensation film on the polarizer or on polarizer the further polarizer that forms of brightness improving film.In the polarizer etc. of ellipsoidal polarizing plate, band optical compensation, give hard-coated film to the polarizer side.
And then, as required, also can be used to give the adhesiveness that improves marresistance, durability, against weather, humidity resistance, hear resistance, moisture-proof, poisture-penetrability, static electricity resistance, electric conductivity, interlayer and improve the processing of various characteristics, functions etc. such as mechanical strength or the insertion of functional layer, stacked etc.
Reflection type polarizer is the polarizer that the reflecting layer is set on polarizer, be used to form and make from the liquid crystal indicator of reflection of the incident light of identification side (demonstration side) and the type that shows etc., have and to omit the built-in of light sources such as backlight and make advantage such as liquid crystal indicator slimming easily.The formation of reflection type polarizer can be undertaken by the suitable way such as mode that the reflecting layer that is made of metal etc. is set on the one side of polarizer by protective clear layer etc. as required.
As the object lesson of reflection type polarizer, can be exemplified as required by on the one side of the transparent protective film of handling through delustring, set up the paper tinsel formed by reflective metal such as aluminium or vapor-deposited film and formed the polarizer etc. in reflecting layer.
Instead reflecting plate directly is attached to the method on the transparent protective film of above-mentioned polarizer, the reflecting layer can also be set on the suitable film that with this transparent membrane is benchmark forms uses such as reflector plate.Also have; because the reflecting layer is made up of metal usually; so from the decline of the reflectivity that prevents to cause, and then keep the viewpoint of initial reflectance for a long time and the viewpoint avoiding establishing protective layer in addition waits, preferably cover the type of service of its reflecting surface with transparent protective film or polarizer etc. owing to oxidation.
Also have, in above-mentioned, the semi-transmission type polarizer can come the catoptrical reflecting layer of the semi-transmission types such as semi-transparent semi-reflecting lens of light transmission that makes simultaneously to obtain by making with the reflecting layer.The semi-transmission type polarizer is located at the rear side of liquid crystal cells usually, can form the liquid crystal indicator of following type etc., promptly, in brighter environment, use under the situation of liquid crystal indicator etc., reflection comes from the incident light of identification side (demonstration side) and display image, in darker environment, use the built-in light sources such as backlight at the back side that is built in the semi-transmission type polarizer to come display image.That is to say, the semi-transmission type polarizer is very useful in the formation of liquid crystal indicator of following type etc., promptly, under bright environment, the energy that uses light sources such as backlight can be saved, under darker environment, also built-in light source can be utilized and very useful in the formation of the liquid crystal indicator of the type used etc.
Ellipsoidal polarizing plate or the circular polarizing disk that further laminated phase-difference plate on the polarizer is constituted describes below.Rectilinearly polarized light being changed into elliptically polarized light or circularly polarized light, elliptically polarized light or circularly polarized light being changed into rectilinearly polarized light or changed under the situation of polarization direction of rectilinearly polarized light, can use polarizer etc.Particularly, as rectilinearly polarized light being changed into circularly polarized light, circularly polarized light being changed into the polarizer of rectilinearly polarized light, can use so-called 1/4 wavelength plate (being also referred to as λ/4 plates).1/2 wavelength plate (being also referred to as λ/2 plates) is generally used for changing the situation of the polarization direction of rectilinearly polarized light.
Ellipsoidal polarizing plate can be used for following situation etc. effectively, i.e. compensation (preventing) supertwist nematic phase (STN) type liquid crystal indicator painted (blue or yellow) that produce because of the birefringence of liquid crystal layer, thus carry out the above-mentioned painted white black situation that shows that do not have.In addition, it is painted that the polarizer of control three-dimensional refractive index produces in the time of can also compensating (preventing) from the picture of oblique observation liquid crystal indicator, thereby preferred.Circularly polarizing plate for example can be used for effectively to situation of adjusting with the tone of the image of the reflection-type liquid-crystal display device of color display image etc., but also has the function of reflecting of preventing.Object lesson as above-mentioned polarizer, can enumerate with film support by Merlon, polyvinyl alcohol, polystyrene, polymethyl methacrylate, polypropylene or other polyolefin, the film that the suitable polymer of polyaryl thing, polyamide and so on constitutes carries out the member that the oriented layer of oriented film, the liquid crystal polymer of birefringent film that stretch processing forms or liquid crystal polymer forms etc.Polarizer can be that for example various wavelength plates or the be used to material that compensates the painted or visual angle that the birefringence by liquid crystal layer causes etc. etc. has the material corresponding to the suitable phase difference of application target, also can be stacked more than 2 kinds polarizer and controlled the material of optical characteristics such as phase difference.
In addition, above-mentioned ellipsoidal polarizing plate or reflection-type ellipsoidal polarizing plate are by suitably making up polarizer or reflection type polarizer and polarizer and being laminated.This class ellipsoidal polarizing plate etc. also can form by stacked respectively successively (reflection-type) polarizer and polarizer in the manufacture process of liquid crystal indicator, to constitute the combination of (reflection-type) polarizer and polarizer, and as mentioned above, be pre-formed under the situation for optical thin films such as ellipsoidal polarizing plates, because outstanding, therefore has the advantage of the manufacturing efficient that can improve liquid crystal indicator etc. at aspects such as quality of stability and lamination operation.
The viewing angle compensation film is also can make image seem more clearly, be used to enlarge the film at visual angle under the situation of the picture of observing liquid crystal indicator from the direction that tilts a little that is not orthogonal to picture.As this viewing angle compensation film, for example can constitute by the oriented film of phase-contrast film, liquid crystal polymer etc. or at material of the oriented layer of transparent base upper support liquid crystal polymer etc. etc.Usually be implemented simple tension, had birefringent thin polymer film along its face direction as what polarizer used, relative therewith, as the polarizer that is used as the viewing angle compensation film, can use along its face direction be implemented the birefringent thin polymer film of having of biaxial tension, the refractive index of the thickness direction controlled that also has been stretched by unidirectional stretching and along its thickness direction along its face direction have birefringent polymer or the biaxially oriented film as tilted alignment film etc. etc.As the tilted alignment film, for example can enumerate and thin polymer film carried out stretch processing under because of the effect of the convergent force that adds thermosetting behind the bonding heat shrink films on the thin polymer film or/and the material of shrink process, make material that the liquid crystal polymer tilted alignment forms etc.Raw material polymer as polarizer, can use with above-mentioned polarizer in the polymer phase that illustrates with polymer, can use with the painted grade that variation was brought at the identification angle that prevents to form or enlarge the suitable polymer blend as purpose such as the good visual angle of identification based on the phase difference that causes by liquid crystal cells.
In addition, wait from the viewpoint that reaches the good wide visual angle of identification, can preferably use the optical compensation polarizer that supports the optical anisotropic layer that the tilted alignment layer by the oriented layer of liquid crystal polymer, particularly discoid liquid crystal polymer constitutes with triacetylcellulose film.
Polarizer and the film adhered polarizer that together forms of brightness improving are located at usually the back side one side of liquid crystal cells.The brightness improving film is the film that shows below characteristic, promptly, when by the backlight of liquid crystal indicator etc. or from reflection of rear side etc., when natural daylight incident is arranged, the rectilinearly polarized light of reflection regulation polarization axle or the circularly polarized light of prescribed direction, and make other light transmissions, therefore brightness improving film and the stacked polarizer that forms of polarizer can be made light incident from light sources such as backlights, and the light that sees through of polarization state is stipulated in acquisition, simultaneously, light beyond the described regulation polarization state can not see through, and is reflected.Be reversed in the light that reflects on this brightness improving pellicular front once more by reflecting layer of being located at its rear side etc., make it to incide once more on the brightness improving film, make its part or all as the light of regulation polarization state and see through, thereby increase the light that sees through the brightness improving film, simultaneously provide the polarised light that is difficult to absorb to polariscope, can be thereby increase in the light quantity of utilization in the demonstration of liquid crystal display image etc., and can improve brightness thus.Promptly, pass polariscope and make under the situation of light incident from the rear side of liquid crystal cells with backlight etc. not using the brightness improving film, have light with the inconsistent polarization direction of polariscopic polarization axle and be polarized mirror basically and absorb, thereby can't see through polariscope.That is, though can be different because of employed polariscopic characteristic, about 50% light can be polarized mirror and sponge, and therefore utilizable light quantity will correspondingly reduce in liquid crystal indicator etc., causes the image deepening.Because the brightness improving film carries out following operation repeatedly, promptly, make light not incide on the polariscope with the polarization direction that can be polarized the mirror absorption, but such light is reflected on the brightness improving film, and then finish counter-rotating by reflecting layer of being located at its rear side etc., light is incided on the brightness improving film once more, like this, the brightness improving film only makes in the light of the two reflection and counter-rotating, its polarization direction becomes and can see through by the polarised light of polariscopic polarization direction, provide it to polariscope simultaneously, therefore can in the demonstration of the image of liquid crystal indicator, use the light of backlight etc. effectively, thereby can make picture bright.
Between brightness improving film and above-mentioned reflecting layer etc., also diffuser plate can be set.Towards described reflecting layer etc., set diffuser plate can spread the light that passes through equably by the light of the polarization state of brightness improving film reflection, eliminates polarization state simultaneously and becomes unpolarized state.That is, diffuser plate makes polarised light return to original natural daylight state.With this unpolarized state light directive reflecting layer that is the natural daylight state etc., after reflections such as reflecting layer,, carry out so repeatedly once more by diffuser plate and incide on the brightness improving film.Make polarised light return to the diffuser plate of original natural daylight state by between brightness improving film and above-mentioned reflecting layer etc., being provided with thus, can be in the brightness of keeping display frame, reduce the inequality of the brightness of display frame, thereby even and bright picture can be provided.By this diffuser plate is set, can suitably increase the repeated reflection number of times of first incident light, and utilize the diffusion function of diffuser plate, bright uniformly display frame can be provided.
As above-mentioned brightness improving film, for example can use: the demonstration of thin-film multilayer duplexer that dielectric plural layers or refractive index anisotropy are different and so on send as an envoy to the rectilinearly polarized light of regulation polarization axle see through and reflect the characteristic of other light film, cholesteric liquid crystal polymer alignment films or in the film substrate upper support the demonstrating any circularly polarized light reflection that will be in left-handed or the dextrorotation of film and so on of this aligned liquid-crystal layer and film that the film etc. of the characteristic of other light transmissions is suited.
Therefore, make the brightness improving film of the type that the rectilinearly polarized light of above-mentioned regulation polarization axle sees through by utilization, make this see through light and directly incide on the polarizer, can when suppressing the absorption loss water that causes by polarizer, light be seen through effectively along the direction consistent with polarization axle.On the other hand, utilize the brightness improving film that makes the type that circularly polarized light sees through of cholesteric and so on, though light is incided on the polariscope, but, consider from suppressing the absorption loss water this point, preferably this circularly polarized light carry out rectilinearly polarized lightization, reenter afterwards and be mapped on the polarizer by polarizer.And, by using 1/4 wavelength plate, circularly polarized light can be transformed to rectilinearly polarized light as this polarizer.
In broad wave-length coverages such as visible region, can play the polarizer of 1/4 wavelength plate effect, for example can utilize following mode to obtain, that is, the phase separation layer that will play the phase separation layer of 1/4 wavelength plate effect with respect to the light luminous energy of 550nm wavelength and show other the phase difference characteristics phase separation layer that for example can play 1/2 wavelength plate effect carries out overlapping mode etc.So the polarizer that is disposed between polarizer and the brightness improving film can be made of the phase separation layer more than 1 layer or 2 layers.
Also have, with regard to cholesteric, also can make up the material of different reflection wavelengths, constitute overlapping configuration structure more than 2 layers or 3 layers, obtain member thus, thereby can obtain the circularly polarized light that sees through of broad wave-length coverage based on this at the wave-length coverage internal reflection circularly polarized light of broads such as visible region.
In addition, polarizer is as above-mentioned polarised light divergence type polarizer, can be made of the member of stacked polarizer and the optical layers more than 2 layers or 3 layers.Therefore, also can be the reflection-type ellipsoidal polarizing plate that forms of combination above-mentioned reflection type polarizer or semi-transmission type polarizer and polarizer or semi-transmission type ellipsoidal polarizing plate etc.
Hard-coated film can utilize in the manufacture process at liquid crystal indicator etc. independent successively stacked mode to carry out stacked on the above-mentioned optical element, but the member that they are laminated in advance, good at aspects such as quality of stability or assembly operations, therefore have the advantage of the manufacturing process that can improve liquid crystal indicator etc.In stacked, can use suitable bonding agencies such as adhesive layer.When bonding above-mentioned polarizer or other optical thin films, their optic axis can adopt suitable arrangement angles according to target phase difference characteristic etc.
Above-mentioned polarizer or optical component be provided with above-mentioned hard-coated film on the one side at least, but on the face that hard-coated film is not set, also can be provided for and the bonding adhesive layer of other member such as liquid crystal cells.The adhesive that forms adhesive layer is not particularly limited, for example can suitably selects to use the adhesive of polymer such as acrylic acid series polymeric compounds, silicone-based polymer, polyester, polyurethanes, polyamide, polyethers, fluorine system or rubber system as base polymer.Particularly can preferably use the optical transparence of acrylic adhesive and so on outstanding, show the wetability of appropriateness and coherency, adhesivity adhesion characteristic and outstanding adhesives such as against weather or hear resistance.
In addition, except above-mentioned, from prevent the foamed phenomenon that causes because of moisture absorption or peel off phenomenon, the warpage of the decline of the optical characteristics that causes because of thermal expansion difference etc. or liquid crystal cells and with the good viewpoints such as liquid crystal indicator of high-quality formation durability, the adhesive layer of the low and excellent heat resistance of preferred hydroscopicity.
For example natural or synthetic resin, particularly tackifying resin or the filler that constitutes by glass fibre, bead, metal powder, other inorganic powder etc., pigment, colouring agent, antioxidant etc. can be contained in the adhesive layer and additive in the adhesive layer can be made an addition to.Also can be to contain particulate and the diffusible adhesive layer of display light etc. in addition.
Can utilize suitable mode to carry out when on polarizer, optical element, setting up adhesive layer.As this example, for example can enumerate following mode, promptly be modulated at the binder solution of about 10～40 weight % that dissolving in the solvent that pure material or mixture by suitable solvent such as toluene or ethyl acetate constitute or dispersion base polymer or its composition form, directly it be attached to mode on the optical element by the suitable mode of sprawling such as curtain coating mode or application pattern then; Perhaps based on above-mentioned after forming adhesive layer on the separator with its handover and stick on mode on the optical element etc.Adhesive layer also can be used as different the composition or the overlapping layer of each layer of kind etc. and being provided with.The thickness of adhesive layer can suitably be determined according to application target or adhesive tension etc., be generally 1～500 μ m, preferred 5～200 μ m, preferred especially 10～100 μ m.
For the face that exposes of adhesive layer, for before using in order to prevent that it from polluting, and can paste the separator covering temporarily.Can prevent the phenomenon that under common mode of operation, contacts thus with adhesive layer.As separator, on the basis of satisfying above-mentioned thickness condition, for example can use as required with suitable removers such as silicone-based or chain alkyl system, fluorine system or molybdenum sulfides plastic sheeting, sheet rubber, paper, cloth, nonwoven, net, foam sheet or metal forming, their suitable thin slice bodies such as duplexer are applied suitable separators commonly used in the past such as material after the processing.
Also have; in the present invention; also can be on each layers such as the polariscope that forms above-mentioned optical element, transparent protective film, optical thin film etc. and adhesive layer; utilize and for example to use mode that salicylate based compound or benzo phenol (benzophenol) based compound, BTA based compound or ultra-violet absorbers such as cyanoacrylate based compound, nickel coordination compound based compound handle etc., make it to have ultraviolet absorption ability etc.
Optical element of the present invention can be preferred for the formation of various devices such as liquid crystal indicator etc.Liquid crystal indicator can form according to method in the past.Promptly, in general, liquid crystal indicator can pass through combination of liquid crystals unit and optical element aptly, and the component parts such as the illuminator that adds as required and the drive circuit of packing into etc. and form, in the present invention, except using optical element of the present invention, be not particularly limited, can form according to method in the past.For liquid crystal cells, also can use for example liquid crystal cells of any type such as TN type or STN type, π type.
The one or both sides that can be formed on liquid crystal cells have disposed the liquid crystal indicator of above-mentioned optical element, used the suitable liquid crystal indicators such as device of backlight or reflecting plate in illuminators.At this moment, optical element of the present invention can be arranged on the one or both sides of liquid crystal cells.When optical element was arranged on both sides, they both can be identical materials, also can be different materials.In addition, when forming liquid crystal indicator, can on suitable position, dispose suitable parts such as for example diffuser plate, antiglare layer, antireflection film, baffle, prism array, lens arra thin slice, light diffusing sheet, backlight etc. more than 1 layer or 2 layers.
Then, Organnic electroluminescent device (organic EL display) is described.In general, on transparency carrier, stack gradually transparency electrode, organic luminous layer and metal electrode in the organic EL display and form illuminator (organic electroluminescent body).Here, organic luminous layer is the duplexer of various organic films, and known have: for example duplexer of the duplexer of hole injection layer that is made of triphenylamine derivative etc. and the luminescent layer that is made of epipolic organic solids such as anthracenes or this kind luminescent layer and the electron injecting layer that is made of perylene derivative etc. or the various combinations such as duplexer of these hole injection layers, luminescent layer and electron injecting layer.
Organic EL display carries out luminous according to following principle, promptly, by on transparency electrode and metal electrode, adding voltage, injected hole and electronics in organic luminous layer, the energy excitation fluorescent material that produces by the compound of these holes and electronics, when the fluorescent material that is excited is got back to ground state, will radiate bright dipping.Recombination mechanism wherein is identical with general diode, also can infer thus, and electric current and luminous intensity demonstrate with respect to applied voltage and follow the stronger non-linear of rectification.
In organic EL display, in order to take out the light that produces in the organic luminous layer, at least one side's electrode must be transparent, will be used as anode by the transparency electrode that tin indium oxide transparent conductive bodies such as (ITO) is made usually.On the other hand, thereby improve luminous efficiency easily as if the injection that will make electronics, it is crucial using the less material of work function on negative electrode, uses metal electrodes such as Mg-Ag, Al-Li usually.
In having the organic EL display of this formation, organic luminous layer is that film as thin as a wafer about 10nm constitutes by thickness.Therefore, organic luminous layer is also the same with transparency electrode, and light is fully seen through basically.Its result, when not luminous from the surperficial incident of transparency carrier and see through transparency electrode and organic luminous layer and can be once more penetrating to the face side of transparency carrier at the light of metal electrode reflection, therefore, when carrying out identification from the outside, the display surface of organic El device is as minute surface.
In the organic EL display that comprises organic electroluminescent body as described below, can polarizer be set in the face side of transparency electrode, simultaneously between these transparency electrodes and polarizer, polarizer is set, in above-mentioned organic electroluminescent body, be provided with transparency electrode by applying the face side that voltage carries out luminous organic luminous layer, the rear side at organic luminous layer is provided with metal electrode simultaneously.
Become the effect of polarised light because polarizer and polarizer have to make from outside incident and at the light of metal electrode reflection, so, have the feasible effect that can't pick out the minute surface of metal electrode from the outside by this polarised light effect.Particularly, adopt 1/4 wavelength plate to constitute polarizer and the angle of the polarization direction of polarizer and polarizer is adjusted into π/4 o'clock, can cover the minute surface of metal electrode fully.
That is, the exterior light that incides this organic EL display has only the rectilinearly polarized light composition because of the existence of polarizer and sees through.This rectilinearly polarized light generally can be converted to elliptically polarized light by polarizer, and particularly when polarizer be the angle of the polarization direction of 1/4 wavelength plate and polarizer and polarizer when being π/4, will become circularly polarized light.
This circularly polarized light sees through transparency carrier, transparency electrode, organic film, reflects on metal electrode, sees through organic film, transparency electrode, transparency carrier afterwards once more, converts rectilinearly polarized light once more to by polarizer.Then, because therefore the direction of polarized light quadrature of this rectilinearly polarized light and polarizer can't see through polarizer.Its result can be covered the minute surface of metal electrode fully.
Part to embodiments of the present invention is illustrated above, but also gives levelling agent etc. sometimes, and the present invention is not had harmful effect and can bring into play effect of the present invention.In addition, same technology also can be used for purposes widely, for example not only can handle one side, can also carry out the processing on two sides etc., is not limited to above-mentioned certainly.
Below, embodiment of concrete expression formation of the present invention and effect etc. is described.Also have, the present invention is not limited to these embodiment, evaluation method certainly.
(1) embodiment of tunicle thin slice
Use heliogravure coating machine, the applying solid composition is that 30 weight % and viscosity are that the toluene solvant of 5mPas is a propenoic methyl carbamate coating liquid on the PET film of 75 μ m, and to make wet thickness be 12 μ m, implements following operation then.Here, viscosity is with galvanometer: the value that RS-1 (Heake corporate system) measures is a benchmark, and wind speed is that the value of measuring with Network リ モ マ ス one: Model 6531 (KANOMAX corporate system) is a benchmark.
＜embodiment 1 〉
After just having applied to film at solid component concentration be that 43 weight %, viscosity are under the state of 15mPas, the angle of utilizing the air-supply mouth that 25 ℃ ± 2 ℃ wind is arranged to respect to base film is 5 °, is provided with the deviation of wind speed 15m/s, film wide cut direction to carry out the operation of spraying for 3 seconds for ± 3m/s.Then, in baking box, carry out fully dry and form and film.
＜comparative example 1 〉
Except being that 58 weight %, viscosity are being coated with under the membrane stage the jet drying wind of 47mPas at solid component concentration, using to form and film with embodiment 1 identical operation.
＜comparative example 2 〉
Except being under the film wide cut deviation of directivity distribution of 25 ± 8m/min the jet drying wind at wind speed, using to form and film with embodiment 1 identical operation.
＜comparative example 3 〉
Except injection temperation is 48 ± 5 ℃ dry wind, uses to form and film with embodiment 1 identical operation.
(2) about the embodiment of liquid crystal material
Triacetyl cellulose (TAC) film (Fuji Photo Film Co., Ltd.'s system at thick 50 μ m, trade name T-50SH) goes up also polyvinyl alcohol (PVA) (the Japanese synthetic chemistry corporate system of dry 1 weight % of coating, trade name NH-18) aqueous solution, form the PVA tunicle of 0.01 μ m, carry out forming alignment films after the friction treatment.The liquid crystal monomer (the bar-shaped nematic phase type of polymer liquid crystal) that mixes above-mentioned (A) formula (6) and the chirality agent of above-mentioned formula (44) and to make its weight ratio be 8: 1, this mixture is dissolved in the toluene and its concentration is 30 weight %, in this toluene solution, further add Photoepolymerizationinitiater initiater (Chiba Specialty Chemicals corporate system, trade name Irgacure) and to make its concentration be 3 weight %, modulation coating liquid (viscosity 4mPas).The above-mentioned coating liquid of coating on above-mentioned alignment films is in order to method enforcement drying, orientation, UV solidify the outward appearance inequality of the optical compensating layer that relatively obtains down.
＜embodiment 2 〉
Solid component concentration at above-mentioned liquid crystal monomer solution coating is that 36 weight %, viscosity are being coated with under the membrane stage of 12mPas, the angle of utilizing the air-supply mouth that 25 ℃ ± 2 ℃ wind is arranged to respect to base film is 5 °, is provided with the deviation of wind speed 13m/s, film wide cut direction to carry out the operation of spraying for 5 seconds for ± 3m/s.Then, 90 ℃ of following heat treatments 2 minutes, irradiation UV200mJ/cm
2Form and film.
＜comparative example 4 〉
Except being coated with under the membrane stage and being that 63 weight %, viscosity are the state jet drying wind of 38mPas, use to form and film with embodiment 2 identical operations at solid component concentration.
＜comparative example 5 〉
Except spraying wind speed is the dry wind that distributes of the film wide cut deviation of directivity of 23 ± 10m/min, uses to form with embodiment 2 identical operations and films.
＜comparative example 6 〉
Except the dry wind of 50 ± 5 ℃ of injection temperations, use with embodiment 2 identical operations formation and film.
＜evaluation result 〉
Cause the interference that produces uneven or intersecting under the Nicol prism with the visual valuation uneven thickness from oblique light the inhomogeneous of state that come off.It is the results are shown in table 1.
Table 1
| Visual valuation | |
| Embodiment 1 | Homogeneity is good, and outward appearance is good |
| Comparative example 1 | It is inhomogeneous to produce big spot shape |
| Comparative example 2 | Produce the inhomogeneous of wire on the MD direction |
| Comparative example 3 | Produce thin-line-shaped inhomogeneous by force on the MD direction |
| Embodiment 2 | Homogeneity is good |
| Comparative example 4 | It is inhomogeneous to produce spot shape ripple |
| Comparative example 5 | It is inhomogeneous to produce line on the MD direction |
| Comparative example 6 | It is inhomogeneous to produce line on the MD direction |
Industrial applicability
As mentioned above, by the present invention, comprising that the coating liquid that will contain resin material and solvent is coated in base film and forms the operation of coated film and make in the manufacture method of tunicle thin slice of operation of coating liquid drying, by making great efforts the various conditions in the research drying process, optimal overlay can be formed, the optical functional layer of the inhomogeneous few homogeneous of applied thickness in the face can be obtained.
Specifically, on the film coated surface that solid component concentration and the viscosity of above-mentioned coating liquid has specified states, direction of travel jet drying wind along film, even thus in large-area zone, the thickness and precision of film layer is improved, realize the homogenization of optical function characteristic in face.
In addition, the wind speed of the dry wind by making above-mentioned injection and the deviation of wind speed can more effectively improve the thickness and precision of film layer within the limits prescribed, make the homogenization of optical function characteristic.
And then the temperature of the dry wind by making above-mentioned injection and temperature deviation can be guaranteed more suitable evaporation rate of solvent within the limits prescribed, can more effectively improve the thickness and precision of film layer, make the homogenization of optical function characteristic.
In addition, except the injection conditions of aforesaid dry wind, by the thickness of restriction film layer, can further effectively improve the thickness and precision of film layer, make the homogenization of optical function characteristic.
The manufacture method of aforesaid tunicle thin slice, in large-area zone and requiring the precision of coating thickness and require optical functional layer, optical compensating layer, the optical compensation plate of the homogeneity of optical function characteristic in face and then be to have in the optical element of such optical functional layer or optical compensation plate, very useful as the optical material with outstanding characteristic.
In addition, for the optical compensation plate that obtains when when above-mentioned optical functional layer is optical compensating layer or for the formation molecule of this optical compensating layer, takes cholesteric structure and the cholesteric layer of orientation occurs, precision height and the homogeneity of optical function characteristic in face of coating thickness are outstanding, and the present invention is effective especially.
Here, the thickness by making above-mentioned cholesteric layer can prevent that as optical compensating layer the disorder or the transmissivity that are orientated from reducing in the scope of 0.5～10 μ m, can realize selecting the raising of reflectivity, anti-coloring, productivity ratio etc.
In addition, the formation molecule of above-mentioned cholesteric layer is non-liquid crystal polymer, carry out in the optical compensation plate of polymerization or the crosslinked polymer that forms at the liquid crystal monomer of taking cholesteric structure and generation to be orientated as non-liquid crystal polymer to this, because polymerization or the crosslinked polymer that forms become non-liquid crystal liquid crystal property, so established cholesteric layer can not appear in the liquid crystal molecule distinctive by variations in temperature cause to the variation of liquid crystalline phase, glassy phase, crystalline phase etc., can be described as the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of impact, stability that its cholesteric structure can not be subject to variations in temperature.
Perhaps, the formation molecule of above-mentioned cholesteric layer is liquid crystal polymer, take in the optical compensation plate of cholesteric structure and generation orientation in this liquid crystal polymer, even the formation molecule is liquid crystal polymer, also can be by cooperating cholesteric crystal monomer or chirality agent and the above-mentioned little cholesteric layer of variations in temperature that is made like, can become the very outstanding and outstanding optical compensation plate of the homogeneity of optical function characteristic in face of stability.
In addition, by being laminated to few one deck polarizer at the supereminent optical compensation plate of aforesaid stability, can be used as the optical element with outstanding optical function characteristic.
In addition, for the image display device that carries these optical components, there is not the image display device uneven or distortion of image to become possibility, so effective especially.
Claims (16)
1. the manufacture method of a tunicle thin slice is characterized in that, comprising: the coating liquid that will contain resin material and solvent is coated on and forms the operation that is coated with rete on the base film and operation that drying coated applies liquid, wherein,
Along the direction of travel of film with dry wind spray to the solid component concentration with described coating liquid be below the 55 weight % and viscosity be below the 20mPas state be coated with film surface.
2. the manufacture method of a tunicle thin slice is characterized in that, comprising:
The coating liquid that will contain resin material and solvent is coated on and forms on the base film that to have solid component concentration be that the following and viscosity of 55 weight % is the operation that is coated with rete of the following state of 20mPas;
Along the direction of travel of described base film, to the described operation that is coated with rete jet drying wind; With make the described operation that is coated with the rete drying.
3. according to the manufacture method of claim 1 or 2 described tunicle thin slices, it is characterized in that the wind speed of the dry wind of described injection is 4～20m/sec, is below ± 30% in the wind speed deviation of film wide cut direction.
4. according to the manufacture method of any described tunicle thin slice in the claim 1～3, it is characterized in that,
The temperature of the dry wind of described injection is 20～45 ℃, and the temperature deviation in the film wide cut direction is below ± 15%.
5. according to the manufacture method of any described tunicle thin slice in the claim 1～4, it is characterized in that,
The described dried thickness that is coated with rete is below the 30 μ m.
6. according to the manufacture method of any described tunicle thin slice in the claim 1～5, it is characterized in that,
By in described coating liquid, using the material of performance optical function, form the described rete that is coated with as optical functional layer.
7. the manufacture method of tunicle thin slice according to claim 6 is characterized in that,
Show the material of the material of optical compensation function by use, form the described rete that is coated with as optical compensating layer as described performance optical function.
8. the manufacture method of tunicle thin slice according to claim 7 is characterized in that,
As described optical compensating layer, form the cholesteric layer that the formation molecule is taked cholesteric structure and orientation is taken place.
9. according to the manufacture method of claim 7 or 8 described tunicle thin slices, it is characterized in that,
Use the material of liquid crystal monomer, behind described drying process, the described rete that is coated with is carried out polymerization processing or crosslinking Treatment, thus as described performance optical compensation function
The non-liquid crystal polymer that formation forms polymerization or crosslinked described liquid crystal monomer is as the cholesteric layer that constitutes molecule.
10. according to the manufacture method of claim 7 or 8 described tunicle thin slices, it is characterized in that,
By using liquid crystal monomer or the liquid crystal polymer material as described performance optical compensation function, formation will be taked cholesteric structure and the cholesteric layer of the liquid crystal polymer of orientation as the formation molecule take place.
11. the manufacture method of any described tunicle thin slice is characterized in that according to Claim 8～10,
The thickness of described cholesteric layer is in the scope of 0.5～10 μ m.
12. utilize any optical functional layer that described manufacture method obtains in the claim 6～11.
13. utilize any optical compensation plate that described manufacture method obtains in the claim 7～11.
14. an optical element is characterized in that,
Possesses the described optical functional layer of claim 12.
15. an optical element is characterized in that,
On the described optical compensation plate of claim 13, be laminated with one deck polarizer at least.
16. an image display device, wherein,
Carried any one in the described optical functional layer of claim 12, the described optical compensation plate of claim 13 or claim 14 or the 15 described optical elements.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195002/2003 | 2003-07-10 | ||
| JP2003195002A JP3839798B2 (en) | 2002-10-22 | 2003-07-10 | Coating sheet manufacturing method, optical functional layer, optical compensation plate, optical element, and image display device |
| PCT/JP2004/003744 WO2005005061A1 (en) | 2003-07-10 | 2004-03-19 | Rocess for producing coated sheet, optically functional layer, optically compensating plate, optical device and image display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1795054A true CN1795054A (en) | 2006-06-28 |
| CN1795054B CN1795054B (en) | 2010-12-15 |
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ID=34055708
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004800143989A Expired - Fee Related CN1795054B (en) | 2003-07-10 | 2004-03-19 | Process for producing coated sheet, optically functional layer, optically compensating plate, optical device and image display |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7820235B2 (en) |
| KR (1) | KR100725441B1 (en) |
| CN (1) | CN1795054B (en) |
| TW (1) | TWI290240B (en) |
| WO (1) | WO2005005061A1 (en) |
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| CN109891279A (en) * | 2016-11-25 | 2019-06-14 | 富士胶片株式会社 | The manufacturing method and optical article of optical article |
| CN111604247A (en) * | 2020-05-13 | 2020-09-01 | 武汉钢铁有限公司 | High-precision color-coated sheet film thickness production control method |
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| KR20060073328A (en) * | 2004-12-24 | 2006-06-28 | 엘지전자 주식회사 | Plasma display panel and making method thereof |
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| DE19520660A1 (en) | 1995-06-09 | 1996-12-12 | Basf Ag | Polymerizable chiral compounds and their use |
| DE19520704A1 (en) | 1995-06-09 | 1996-12-12 | Basf Ag | Polymerizable chiral compounds and their use |
| JP3757467B2 (en) * | 1996-05-29 | 2006-03-22 | 日本油脂株式会社 | Method for manufacturing antireflection film |
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2004
- 2004-03-19 WO PCT/JP2004/003744 patent/WO2005005061A1/en active Application Filing
- 2004-03-19 CN CN2004800143989A patent/CN1795054B/en not_active Expired - Fee Related
- 2004-03-19 KR KR1020057020636A patent/KR100725441B1/en active IP Right Grant
- 2004-03-19 US US10/563,865 patent/US7820235B2/en not_active Expired - Fee Related
- 2004-03-23 TW TW093107776A patent/TWI290240B/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100725441B1 (en) | 2007-06-07 |
| TWI290240B (en) | 2007-11-21 |
| CN1795054B (en) | 2010-12-15 |
| TW200502594A (en) | 2005-01-16 |
| US20060158076A1 (en) | 2006-07-20 |
| US7820235B2 (en) | 2010-10-26 |
| KR20060005409A (en) | 2006-01-17 |
| WO2005005061A1 (en) | 2005-01-20 |
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